You are in luck! There are a few good choices,imho..
1) Gmaj 2 is excellent..the original was a but flimsy, but the 2 has better build quality..both are evry transparent
2) The Line6 HD500 also sounds great..but is physically big. Do you play small stages?? That could be a problem.
3) The GSP is awesome and its footswitch makes it so easy to use. I havent hear it, but people who have say it sounds excellent...
4) Rocktron IntelliFx...also transparent...possiblly even 1 percent more than the GMaj2...but thats is not noticeable even to my studio-rat friends (but I have compared them for hours!!)...
all good choices. I think comes down to 4CM?? Or do you play small stages, or some other factor that decides which way to go (if its cost.the Rocktron gets the job done very cheaply..but the operating system seems rather SPARTAN,at times. Still, the sound is excellent.
GtrGeorge